216425534 has 8 divisors (see below), whose sum is σ = 349610520. Its totient is φ = 99888696.

The previous prime is 216425533. The next prime is 216425551. The reversal of 216425534 is 435524612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 216425534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216425533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4162004 + ... + 4162055.

It is an arithmetic number, because the mean of its divisors is an integer number (43701315).

Almost surely, 2^216425534 is an apocalyptic number.

216425534 is a deficient number, since it is larger than the sum of its proper divisors (133184986).

216425534 is a wasteful number, since it uses less digits than its factorization.

216425534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8324074.

The product of its digits is 28800, while the sum is 32.

The square root of 216425534 is about 14711.4082942457. The cubic root of 216425534 is about 600.3937545021.

The spelling of 216425534 in words is "two hundred sixteen million, four hundred twenty-five thousand, five hundred thirty-four".